diff --git a/src/main/kotlin/dev/usbharu/hideout/repository/PostRepositoryImpl.kt b/src/main/kotlin/dev/usbharu/hideout/repository/PostRepositoryImpl.kt
index b547f446..e50a0f09 100644
--- a/src/main/kotlin/dev/usbharu/hideout/repository/PostRepositoryImpl.kt
+++ b/src/main/kotlin/dev/usbharu/hideout/repository/PostRepositoryImpl.kt
@@ -9,6 +9,7 @@ import org.jetbrains.exposed.sql.SqlExpressionBuilder.eq
 import org.jetbrains.exposed.sql.transactions.experimental.newSuspendedTransaction
 import org.jetbrains.exposed.sql.transactions.transaction
 import org.koin.core.annotation.Single
+import java.time.Instant
 
 @Single
 class PostRepositoryImpl(database: Database, private val idGenerateService: IdGenerateService) : IPostRepository {
@@ -45,10 +46,8 @@ class PostRepositoryImpl(database: Database, private val idGenerateService: IdGe
         }
     }
 
-    override suspend fun findOneById(id: Long): Post? {
-        return query {
-            Posts.select { Posts.id eq id }.singleOrNull()?.toPost()
-        }
+    override suspend fun findOneById(id: Long, userId: Long?): Post? {
+        TODO("Not yet implemented")
     }
 
     override suspend fun findByUrl(url: String): Post? {
@@ -62,6 +61,18 @@ class PostRepositoryImpl(database: Database, private val idGenerateService: IdGe
             Posts.deleteWhere { Posts.id eq id }
         }
     }
+
+    override suspend fun findAll(since: Instant?, until: Instant?, minId: Long?, maxId: Long?, limit: Int?, userId: Long?): List<Post> {
+        TODO("Not yet implemented")
+    }
+
+    override suspend fun findByUserNameAndDomain(username: String, s: String, since: Instant?, until: Instant?, minId: Long?, maxId: Long?, limit: Int?, userId: Long?): List<Post> {
+        TODO("Not yet implemented")
+    }
+
+    override suspend fun findByUserId(idOrNull: Long, since: Instant?, until: Instant?, minId: Long?, maxId: Long?, limit: Int?, userId: Long?): List<Post> {
+        TODO("Not yet implemented")
+    }
 }
 
 object Posts : Table() {
diff --git a/src/main/kotlin/dev/usbharu/hideout/service/post/IPostService.kt b/src/main/kotlin/dev/usbharu/hideout/service/post/IPostService.kt
index 298dae0a..4459b8d2 100644
--- a/src/main/kotlin/dev/usbharu/hideout/service/post/IPostService.kt
+++ b/src/main/kotlin/dev/usbharu/hideout/service/post/IPostService.kt
@@ -1,10 +1,8 @@
 package dev.usbharu.hideout.service.post
 
-import dev.usbharu.hideout.domain.model.ap.Note
 import dev.usbharu.hideout.domain.model.hideout.dto.PostCreateDto
 import dev.usbharu.hideout.domain.model.hideout.entity.Post
 
 interface IPostService {
     suspend fun createLocal(post: PostCreateDto): Post
-    suspend fun createRemote(note: Note): Post
 }
diff --git a/src/main/kotlin/dev/usbharu/hideout/service/post/PostServiceImpl.kt b/src/main/kotlin/dev/usbharu/hideout/service/post/PostServiceImpl.kt
new file mode 100644
index 00000000..fa9e20f1
--- /dev/null
+++ b/src/main/kotlin/dev/usbharu/hideout/service/post/PostServiceImpl.kt
@@ -0,0 +1,35 @@
+package dev.usbharu.hideout.service.post
+
+import dev.usbharu.hideout.domain.model.hideout.dto.PostCreateDto
+import dev.usbharu.hideout.domain.model.hideout.entity.Post
+import dev.usbharu.hideout.exception.UserNotFoundException
+import dev.usbharu.hideout.repository.IPostRepository
+import dev.usbharu.hideout.repository.IUserRepository
+import dev.usbharu.hideout.service.activitypub.ActivityPubNoteService
+import org.koin.core.annotation.Single
+import java.time.Instant
+
+@Single
+class PostServiceImpl(private val postRepository: IPostRepository, private val userRepository: IUserRepository, private val activityPubNoteService: ActivityPubNoteService) : IPostService {
+    override suspend fun createLocal(post: PostCreateDto): Post {
+        val user = userRepository.findById(post.userId) ?: throw UserNotFoundException("${post.userId} was not found")
+        val id = postRepository.generateId()
+        val createPost = Post(
+                id = id,
+                userId = post.userId,
+                overview = post.overview,
+                text = post.text,
+                createdAt = Instant.now().toEpochMilli(),
+                visibility = post.visibility,
+                url = "${user.url}/posts/$id",
+                repostId = null,
+                replyId = null
+        )
+        activityPubNoteService.createNote(createPost)
+        return internalCreate(createPost)
+    }
+
+    private suspend fun internalCreate(post: Post): Post {
+        return postRepository.save(post)
+    }
+}